Abstract
Some novel approaches were taken to provide the improvements in mechanical properties that are almost always necessary to prepare a commercially useful elastomer from poly(dimethylsiloxane) (PDMS) [-Si(CH3)2O-]. The reinforcement was provided by poly(diphenylsiloxane) (PDPS) [-Si(C6H5)2O-], a hard glassy polymer, which was introduced into the PDMS by two rather different techniques. In the first, the PDPS was prepared separately by condensation polymerization of diphenylsilanediol and then solution-blended into the PDMS. In the second, it was generated by in situ polymerization of the same monomer absorbed into the PDMS network. The resulting materials were characterized by scanning electron microscopy and by stress-strain isotherms in elongation. At least under some conditions both techniques were found to be successful, leading to increases in ultimate strength by a factor of two or more.
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Wang, S., Mark, J.E. Reinforcement of elastomeric poly(dimethylsiloxane) by glassy poly(diphenylsiloxane). J Mater Sci 25, 65–68 (1990). https://doi.org/10.1007/BF00544185
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DOI: https://doi.org/10.1007/BF00544185